A 160 Gbp fork fern genome shatters size record for eukaryotes

2024/05/31 by Pol Fernández, Rémy Amice, David Bruy +6 · 1 voice · 6 citations
Agricultural and Biological Sciences · Biochemistry, Genetics and Molecular Biology · #Fern and Epiphyte Biology #Plant Diversity and Evolution #Plant and Fungal Species Descriptions

paper · pdf · doi:10.1016/j.isci.2024.109889

openalex publication_date 2024/05/31 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31

Abstract

Vascular plants are exceptional among eukaryotes due to their outstanding genome size diversity which ranges ∼2,400-fold, including the largest genome so far recorded in the angiosperm Paris japonica (148.89 Gbp/1C). Despite available data showing that giant genomes are restricted across the Tree of Life, the biological limits to genome size expansion remain to be established. Here, we report the discovery of an even larger eukaryotic genome in Tmesipteris oblanceolata , a New Caledonian fork fern. At 160.45 Gbp/1C, this record-breaking genome challenges current understanding and opens new avenues to explore the evolutionary dynamics of genomic gigantism.

Citations

• The largest eukaryotic genome of them all?
• What's in a genome? The C-value enigma and the evolution of eukaryotic genome content
• Impact of whole‐genome duplication events on diversification rates in angiosperms
• Evolution of genome space occupation in ferns: linking genome diversity and species richness
• Genome size is positively correlated with extinction risk in herbaceous angiosperms

Cited by

• Selection shapes the evolution of genome size in a globally invasive plant
• Comparative transcriptomics in ferns reveals key innovations and divergent evolution of the secondary cell walls
• Comprehensive in silico characterization of proteins associated with light responses, transport, and stress-related processes in the gametophyte of the fern Dryopteris affinis ssp. affinis
• Gene networks are conserved across reproductive development between the fern <i>Ceratopteris richardii</i> and the flowering plant <i>Arabidopsis thaliana</i>
• Investigating DNA words and their distributions across the tree of life
• PrinTE: A Forward Simulation Framework for Studying the Role of Transposable Elements in Genome Expansion and Contraction

Discussions

• Tmesipteris oblanceolataのゲノムサイズ論文 Fernández et al. (2024) doi.org/10.1016/j.is... [bsky, 1 points, 1 comments]

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